Shower valve



FIG. 1 is a perspective view of a shower valve according to the present invention, the broken lines showing of the shower head and pipe fitting is for illustration purposes only and forms no part of the claimed design invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof. 

The ornamental design for a shower valve, as shown and described. 